chore: Prefer testcontainers_modules re-exports

`testcontainers_modules` wraps around `testcontainers`. When our version conflicts with its version, issues arise. For this reason, prefer its own, re-exported version of `testcontainers`.

crates/core/Cargo.toml

@@ -26,7 +26,7 @@ repository.workspace = true
 authors.workspace = true
 
 [features]
-testkit = ["dep:charted-testkit", "dep:testcontainers"]
+testkit = ["dep:charted-testkit", "dep:testcontainers-modules"]
 default = ["testkit"]
 merge = ["azalia/config"]
 
@@ -40,8 +40,9 @@ rand = "0.8.5"
 serde.workspace = true
 serde_json.workspace = true
 utoipa.workspace = true
-testcontainers = { workspace = true, optional = true }
-testcontainers-modules = { workspace = true, features = ["postgres"] }
+testcontainers-modules = { workspace = true, optional = true, features = [
+    "postgres",
+] }
 
 [build-dependencies]
 chrono.workspace = true

crates/core/src/testkit/containers.rs

@@ -13,8 +13,10 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-use testcontainers::{runners::AsyncRunner, ContainerAsync, ImageExt};
-use testcontainers_modules::postgres::Postgres;
+use testcontainers_modules::{
+    postgres::Postgres,
+    testcontainers::{runners::AsyncRunner, ContainerAsync, ImageExt},
+};
 
 // renovate: datasource=docker rev=library/postgres
 const TAG: &str = "16.2";